Fireproof grade: A0, A30, A60, B0, B15, B30, etc. Leaf no.: single, double Material: steel Leaf thickness: 3 to 15mm Nominal size: 1700*600mm to 2000*1000mm Certificate: CCS, ABS, BV, DNV, NKK, KR, LR, GL, RINA, RS, EC, etc.

YUSHUO